I
spent a few months in Texas one summer, near Houston, and had very little opportunity
to get out and do any shooting. One weekend I decided I needed to correct this; poked around on a map to find potential photography spots and drove off, in
search of wildlife on Galveston Bay.

Like many days I go
out shooting, not too much was showing, and that's how it goes in nature photography.
But by an overflow spillway in some shallow water between the retention walls,
a Blue Crab (Callinectes sapidus) was foraging. He wasn't very thrilled
about my approach with the macro lens attached, and provided the threatening
display as I loomed overhead. I'm not sure about the bubbles — they could be
an additional part of the warning display, or simply because he had paused in
water level with his carapace.